When Aegis Angel enters the battlefield, another target permanent is indestructible for as long as you control Aegis Angel. (Effects that say "destroy" don't destroy that permanent. An indestructible creature can't be destroyed by damage.)

Akroma, Angel of Fury can't be countered.
Flying, trample, protection from white, protection from blue
: Akroma, Angel of Fury gets +1/+0 until end of turn.
Morph (You may play this face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Flash; convoke (Each creature you tap while playing this spell reduces its cost by or by one mana of that creature's color.)Flying
When Angel of Salvation comes into play, prevent the next 5 damage that would be dealt this turn to any number of target creatures and/or players, divided as you choose.

FlyingWhen Angel of Serenity enters the battlefield, you may exile up to three other target creatures from the battlefield and/or creature cards from graveyards.When Angel of Serenity leaves the battlefield, return the exiled cards to their owners' hands.